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FFULC's avatar
FFULC
Icon for New Contributor rankNew Contributor
3 years ago

Cannot detect MAX V cpld and Cyclonne 5GX in the same jtag chain

Hi I have a new circuit card design with a Byte Blaster 10 pin header connected via jtag to a MAX 5M40ZE64 and then a Cyclone 5CGXFC5C6. The Quartus programmer cannot detect the chain. When I run...
ak6dn's avatar
ak6dn
Icon for Regular Contributor rankRegular Contributor
3 years ago

You don't supply your schematic, but I wonder on how you set the VCC levels for the JTAG blocks on each part.

Are you setting them to be compatible levels (ie, all 3.3V I/O) between the two devices and your JTAG programmer?